About: http://webisa.webdatacommons.org/453181521

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	This invention relates generally to abrasive finishing machines, and more particularly to apparatus for polishing rigid disks capable of magnetically storing digital data.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com